Coke oven charging machine



Jan. 16, 1934. c, s 1,943,634

COKE OVEN CHARGING MACHINE Filed June 18, 1950 3 Sheets-Sheet l Jan. 16, 1934. c. STILL COKE OVEN CHARGING MACHINE Filed June 18, 1930 5 Sheets-Sheet 2 Jan. 16, 1934. c $T|LL 1,943,634

COKE OVEN CHARGING MACHINE Filed June 18, 1950 I5 Sheets-Sheet 3 FCH z; 22

| I 0 I J\ f by N I n a a I I g A Q I l i i I I I Q h I J l R UJPF W41 5 Patented Jan. 16, 1934 1,943,634

UNITED s A'rss PATENT OFFICE Application June is, 1930, Serial No. 462,015,

and in Germany June 20,1929

-' '5 Claims. (c1.214 1s) The usual constructions of machines for charga coke pushing device 3, with which, however, the ing horizontal coke ovens with rammed coal cakes invention is not concerned. The coal hopper 4 have the defect and disadvantage that'a certain is rigidly connected with the carriage 1. The free space is left between the oven door opening ramming box 5 is arranged below the discharge 5 and the end of the ramming box facing the ovens, end of the hopper. The two side walls 6 of the which space is required on the one hand for box 5 are connected with an iron framework 8 by permitting the machine to travel along the front means of intermediate devices 7, which allow the of the oven battery outside of the vertical buck said walls 6 to be drawn apart through a small stays and on the other hand for giving suflicient distance after the ramming has been completed. 1 passageway to the operators. The consequence The framework 8- is displaceable through a cerof this arrangement, however, is that the coal tain distance on the under carriage 1 of the ma- :ake is not guided through the entire length of chine in the direction of the axis of the oven by its sides when being passed from the ram box rollers 9 which runon rails 10. Racks and gear to the oven chamber, causing thereby the risk of wheels 11, '12 serving for displacing the frame are 15 its being damaged or broken especially when its operated by a motor 13, secured to the carriage 1,

height exceeds about 2 to 3 meters and more through 'other self-locking gearing 14, 15. particularly with narrow coke ovens which are The framing-8 serves also to support the botmore and more adopted inrecent times. tom plate 16 of the ramming box and a pair of The coke oven charging machine forming the sprocket wheels 17 with a Gall chain 18 running 20 subject of my invention aims at establishing an on the wheels. The chain 18 is coupled at 19 uninterrupted side guiding of the coal cake from with the bottom plate 16 of the ramming box. the, ram box to the oven chamber in order to The sprocket wheels 17 can be driven, through secure its introduction into the oven in'unintermediate gearing (not shown), by another damaged condition, motor 25, supported on the carriage 1. The base 25 According to the invention, thisis effected by 16 carries, at its frontand rear ends, shields 20 displacing the ram box or at least its two side and 21 which "engage with and support the walls, after ramming, on the lower carriage of the rammed'c'ake at the front and back. The rams machine in the direction of the oven axisin such are indicated in Fig. 1 at 24, the machinery for a way that the ends of the walls of the ramming operating" them being omitted. The shields 20 30 chamber are brought close to the door frame'of arid 21 are removably attached to the bottom the oven. plate -16-by means of pins or other well-known An embodiment of the invention is-shown in suitable means and are carried thereby during the accompanying drawings wherein its forward movement. The shield 21 is further Fig. 1 represents a vertical section on the line supported-by plate 30 which is rigidly fixed to 35 I--I of Fig. 2 through the machine parallel to bottom plate 16. v r l the front of and looking towards the ovens. The machine is operated in the following man- Fig. 2 is a vertical longitudinal section on the nerz- I line 11-11 of Fig. 1 through the centre of the The ramming box 5 is normally, i. e. for the ramming box, and travel alongthe track 2 and during the ram- 40 a Fig. 3 is a horizontal section, mainly of the ming operation in the position relatively to the ramming box, on the line III-III of Fig. 2. The ovens as shown in Fig. 2 where a certain free manner of representation used in Fig. 3 differs space' 'exists between the forward end 26 of the from that ofFig. 2 in that the ramming chambox wallsfi and the door frame 27 which space bar is shown in the above-mentioned displaced is partially occu ied by the buckstays 28. For

-45 position, undertaking a new ramming, the two side walls Figs. 4, 5 and 6 are detailed views of the end 6 are placed at the normal distance correspondof the charging device nearest the oven, illustrating to the width of the rammed cake and the ing the successive steps during which the cake two shields 20 and 21 are also in position. Then within the oven is further compressed. the box 5 is filled with coal in the usual man- 50- The lower part of the machine is in the usual ner from the hopper 4 which is rammed .so that manner formed by an under carriage 1 which can a compressed cake 23 (Fig. 2) is produced. The be run on the track 2 along the front of the whole machine may, during this time, occupy ovens. I at any position desired along the whole oven bat- In the example illustrated, it is assumed that tery. pThe machine is now brought in front of '55; the machine, as shown in Fig. 1, is'combinedwith the oven chamber 22 (Fig. 3) to be charged,

from which both doors have been removed, so that the box 5 is exactly opposite the oven chamher.

After the machine has been so positioned the two walls 6 of the ramming box are slightly drawn apart from one another by the apparatus in order to provide some lateral play for the coal cake 23 during its later movement into the oven chamber, and then the framing 8 carrying the box 5 is displaced in the direction of the axis of the oven on the rails 10 by the motor 13 and by gear 11, l2, 14, 15 until the box occupies the position shown in Fig. 3 in which its front end 26 lies close against the door frame 27 of the oven chamber 22. The sprocket wheels 17, actuated by the motor 25, then move the bottom plate 16 of the box 5, connected by the chain 18 with the said wheels, forward into the oven chamber 22. Since the walls 6 of the box 5, which has now been moved up to the oven chamber, provide continuous and steady side guides for the cake 23, the latter is introduced into the chamber 22 smoothly and in undamaged condition. One of the advantages gained by moving the framing 8 in the direction of the oven is that the means supporting the forward end of the bottom plate 16 of the box 5 are brought closer to the oven sole, thus avoiding any bending of the free front end of the plate 16 between the machine and the oven.

Th efficient guiding of the coal cake obtained in this way obviates any chance of its being broken up, even if the cake is of a considerable height and somewhat narrow. This result is assisted by the provision of the two shields 20 and 21 which prevent portions of coal from being broken off at the both ends of the cake during its insertion.

' After the coal cake has been completely introduced into the chamber 22, the shield 20 supporting its front end is removed from the side of the oven which is situated opposite to the machine and replaced by the respective oven door. The shield 21 at the opposite end is coupled in this position with the two side walls 6 of the box 5 and simultaneously detached from the bottom plate 16. The plate 16 is now withdrawn from the oven chamber 22 by the chain 18. By the shield 21 which is fixed to the side walls 6 the cake 23 is prevented from being withdrawn together with the bottom plate 16 and remains, therefore, in the oven chamber 22. The shield 21 is then released from the walls 6 of the box 5 and is drawn back, by a suitable winding device, into its original position, as shown in Figs. 2 and 3. Finally, the walls 6 are also brought back to their normal position, shown in Fig. 2, by the rearward movement of the framing 8 fixed to them on the carriage 1. The whole machine can now be moved away from the charged oven and the door inserted on this side and the oven chamber 22 consequently closed.

The constructional arrangements for moving the ramming box in the direction of the axis of the oven, which movement is a characteristic feature of the invention, can be modified. For example, the object of the invention would also be obtained if the two side walls 6 of the ramming box soon after they had been drawn apart, or during and in conjunction with this procedure, alone were moved in the direction of the axis of the oven up to the oven chamber.

Also, in this case the framing parts 8, serving as the side supports of the walls 6 of the ramming box, might be moved with the walls. In this modification the bottom plate of the ramming box will be directly supported on the lower carriage 1 and its chain drive will be rigidily connected with the latter.

A useful modification of the coke oven charging machine as described above can be provided, without making important changes in the whole construction, by the following arrangement whereby, after the ramming box has been moved in the direction of the axis of the ovens for the guiding purpose aforesaid, the rear end of the coal cake introduced into the oven chamber can be compressed and consolidated.

In this modification, the cake 23 is formed with the machine shown in Fig. 2 and the movement of the whole machine along the oven battery up to the oven chamber 22 to be charged is accomplished exactly as described above. The particular feature of the modification consists in the movement of the ram box walls which follows the ramming operationonly to such an extent that thereafter a further movement of about 2 to 3 inches is still available beforethe ram box walls abut the frame of the oven door.

This usually requires that, in the displaced position of the ramming chamber 5 (see Fig. 3), a small space should be left between the front edges 26 (which are shown by a dotted line in Fig. 3) of the two ram box walls 6 and the door frame 27 of the oven chamber 22. This space does not interfere with the safe introduction of the coal cake from the ramming box 5 into the oven chamber 22. It is also possible that this space need not at all be provided or may be reduced to a very small amount, if the door frame 27'of the oven chamber is so proportioned and constructed that the front ends of the walls 6 can be inserted in it for a slight distance.

After the rammed cake 23 has been completely introduced in the oven chamber 22, the rear shield 21 is released from the bottom plate 16 and con-' nected with the two side walls 6 of the ramming chamber by means of the bars 29 which are inserted through slots in the side walls 6 and which then support the back side of shield 21. The whole ramming box 5 is now moved towards the oven chamber 22 through the short open space still remaining. Thereby the rear shield 21, moving with the walls 6 of the ramming box, causes the adjoining rear portion of the cake to be compressed and consolidated. After this has been effected, the bottom plate 16 of the ramming box is again withdrawn from the oven chamber 22'by the chain 18, as described above the rear shield 21 supporting and retaining the rammed cake i 23, so that it remains in the oven chamber 22. This operation, as briefly described, will be made clear and more readily understood by referring to Figs. 4, 5 and 6 of the drawings. Fig. 4 shows the position of shield 21 and plate 30when the coal cake has just been pushed into the oven. Fig. 5 shows the connection between shield 21 and the side walls 6. By the introduction of the bars 29 through slots in the side walls 6, the U shaped plate 30 serving as a positioning device under normal operations, is drawn back together with the bottom plate 16 to which it is rigidly attached, and under these conditions the shield 21, which is not connected with the bottom plate 16, remains in its position as illustrated in Fig. 4. Fig. 6 shows how the side walls 6 are moved for-, ward against the front of the oven 22, and due to the connections 29 the shield 21 is also moved forward for compressing the coal cake 23 within the oven chamber. After this operation the bottom plate 16 is withdrawn and the shield 21 is removed as above described.

The arrangement representing the essential feature of the invention, in which the rammed coal cake is guided from the ramming box to the oven chamber by this ramming box being moved in the direction of the axis of the oven up to the oven door frame, has the advantage of great simplicity and stability and at the same time avoids all manual manipulations. More particularly all manual operations in the immediate neighbourhood of the door frames of the oven chamber are obviated, which operations, because of the lack of sufficient free space between the buckstays and because of the heat radiated from the oven chamber, make this work exceedingly difificult. As a result of this arrangement the ovens can be operated more easily and expeditiously, which is of great importance particularly with modern ovens with their greatly increased outputs and short carbonizing periods. All the above-named advantages also increase the reliablity of the operation.

What I claim is:

1. In a coke oven charging machine of the ramming type, a carriage travelling along the oven battery, a framing supported by said carriage, a ramming box carried by said framing, and means for moving the framing with the ramming box carried thereby in the direction of the oven axis and to such an extent that the front end of said box substantially adjoins the oven.

2. In a coke oven charging machine of the ramming type, a ramming box having movable side walls, and means for moving said walls in the direction of the oven axis to such an extent that the front ends of said walls substantially adjoin the oven and form a continuous guiding means for the coal cake during its insertion into the oven chamber.

3. In a coke oven charging machine of the ramming type, a ramming box, and means whereby said ramming box with the coal cake contained therein, is displaced in the direction of the oven axis to such an extent that the front end of said box lies closely adjacent the oven and forms a continuous guiding means for the coal cake during its complete insertion into the oven chamber.

4. In a coke oven charging machine of the ramming type, a ramming box having side walls and end shields, means whereby the side walls of the ramming box, after the coal cake has been rammed, are displaced in the direction of the oven axis to such an extent that the front ends of said side walls substantially adjoin the oven and form a continuous guiding means for the coal cake during its complete insertion into the oven chamber, in combination with means whereby further displacement of the rear end shield effects compression of the rear end of the coal cake within the oven chamber.

5. In a coke oven charging machine of the ramming type, a ramming box having side walls, end shields and a bottom plate, means whereby the side walls of the ramming box, after the coal cake has been rammed, are displaced in the direction of the oven axis to such an extent that the front ends of said side walls substantially adjoin the oven and form a continuous guiding means for the coal cake during its complete insertion into the oven chamber, means for moving the bottom plate of the ramming box with the coal cake thereon into the oven chamber, means for moving the rear end shield of the ramming box against the coal cake to effect compression of the rear end thereof within the oven chamber, and means for withdrawing said bottom plate while said end shield is in position against the end of said coal cake.

CARL STILL. 

